leffingwell



LEFFINGWELL & THOMPSON.

Gas Regullatdr. Y

, Patented. April .2, 1861.

No'. 31,893# y Wffesses;

UNITED STATES PATENT OFFICE.

J. G. LEFFINGWELL, OF NEWARK, NEV JERSEY, AND G. W. THOMPSON, OF NEW YORK, N. Y.

GAS-BURNER.

Specification of Letters Patent No. 31,893, dated 'April 2, 1861.

To all whom it may concern:

Be it known that we, J. G. LEFFINGWELL, of Newark, in the county of Essex and State of New Jersey, and G. lV. THOMPSON, of the city, county, and State of New York, have invented a new and Improved Gas- Burner; and we do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification, in which- 'Figure l represents a vertical, central section of our invention. Fig. 2, is a detached section of the diaphragm, showing the manner in which the same is fastened.

Similar letters of reference in both views indicate corresponding parts.

This invention consists in the arrangew ment of a gas burner which is provided in its interior with a flexible diaphragm and with a rising and falling valve in such a manner that, by the continued action of said diaphragm and valve, the quantity ofgas flowing through the burner regulates itself, and that a steady flame is produced without wasting any gas, entirely independent of the pressure with which the gas passes through the pipes. l

To enable those skilled in the art to make and use our invention, we will proceed to describe its construction and operation, with refernece to the drawing.

Our gas burner, A, `is provided with a tip, a, of the ordinary construction. This tip passes through the top of a chamber, B, made of sheet brass or any other suitable material and in any desirable shape, and it is secured to a diaphragm, C, of leather, or any other suitable material, that is not injured by the action of the gas. This diaphragm is fastened in the interior of the chamber by means of a ring, o, a detached section of which is shown in Fig. 2. The sidesof the ring are inclined, and its upper edge is turned over so that it readily retains the wire, d, which serves to secure the edge of the diaphragm, round the ring. This wire is prevented from coming od in one direction by the inclined sides of the ring, and in the other by the hooked edge. The diaphragm must not, however, be stretched tightly across the ring, and it must have sufficient play up and down to allow the valve,D,to approach to and recede from the seat, e. This valve is firmly attached to the lower end of the tip, a, and it is fastened to the diaphragm by a flange, f, above, and a nut, g, below, a disk, L, of sheet metal be ing placed under the flange, f, in order to increase the strength of thev diaphragm.

The valve, D, is `closed at the bottom, but its stem, is hollow, and it is provided with one or more holes, z', which form a communication between that portion of the chamber, B, below the diaphragm and the interior of the valve stem. The weight of this valve and tip is regulated according to the pressure of the gas. The valve seat, e, is formed in the lower part of the chamber, which also forms the socket, j, by which to attach the burner to the pipe. Lugs, lo, may be attached to the top of the chamber for the purpose of retaining a globe or shade. t

The operation is as follows-Then the pressure of the gas is low, the valve, D, sinks down to a position shown in the drawing, and the gas passes freely through the seat, e, and hole, z', to the tip, as indicated by the. arrows. But if the pressure of the gas increases, it forces up the diaphragm and with it the valve, D, and the opening between said valve and its seat is diminished. If the valve is properly adjusted, the quantity of gas passing through the burner remains unaffected by any variation in the pressure of the gas, and a steady flame is obtained and a waste of gas is precluded. The principal advantage of this arrangement is that each burner is its own regulator, and that by the comparatively large surface of the diaphragm, the smallest variation in the pressure of the gas sensibly affects the position of the valve.

7e do not claim, broadly, the employment of the flexible diaphragm for the purpose of regulating the flow of gas, but,

Having thus fully described our invention, what we claim as new and desire to secure by Letters Patent, is-

l. A vgas burner, A, having in combination a tip, a, flexible diaphragm, C, and valve, D, arranged in the manner and for the purposes set forth.

2. The ring, b, with its inclined sides and hooked edge, as described, for the purpose of securing the diaphragm.

JOHN G. LEFFINGVELL.

GEO. W. THOMPSONl lVitnesses JAMES Oris DENNIsToN, E. MENIFRIED. 

